Patents by Inventor Melvin Pike

Melvin Pike has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Front plate for trench boxes
    Patent number: 4202649
    Abstract: A front plate for trench boxes located at one end of a rectangular trench box and attached between a pair of spaced apart adjacent trench box walls. The front plate has a chisel edge smooth skin bottom with means to achieve attachment of the front plate to adjacent trench box walls. Vertical and horizontal structural members are structurally interrelated and attach to the bottom and the bottom extends beneath the lowermost horizontal structural element and includes the bottom closure plate closing on a plurality of spaced apart gusset plates extending in vertical planes below the lowermost horizontal structural member.
    Type: Grant
    Filed: December 4, 1978
    Date of Patent: May 13, 1980
    Assignee: Efficiency Production, Inc.
    Inventors: John B. Cook, Melvin Pike